April 23 events in history

599 Maya king Uneh Chan of Calakmul attacks rival city-state Palenque in southern Mexico, defeating queen Yohl Ik'nal and sacking the city
711 Dagobert III is crowned King of the Franks
1014 Battle of Clontarf: Brian Boru defeats Viking invaders, but is killed in battle
1016 Edmund Ironside succeeds his father Æthelred the Unready as king of England
1343 St. George's Night Uprising commences in the Duchy of Estonia
1348 The founding of the Order of the Garter by King Edward III is announced on St. George's Day
1516 The Bayerische Reinheitsgebot (regarding the ingredients of beer) is signed in Ingolstadt
1521 Battle of Villalar: King Charles I of Spain defeats the Comuneros
1635 The first public school in the United States, Boston Latin School, is founded in Boston
1655 The Siege of Santo Domingo begins during the Anglo-Spanish War, and fails seven days later
1660 Treaty of Oliwa is established between Sweden and Poland
1661 King Charles II of England, Scotland and Ireland is crowned in Westminster Abbey
1815 The Second Serbian Uprising: A second phase of the national revolution of the Serbs against the Ottoman Empire, erupts shortly after the annexation of the country to the Ottoman Empire
1910 American President Theodore Roosevelt makes his "The Man in the Arena" speech
1914 First baseball game at Wrigley Field, then known as Weeghman Park in Chicago
1918 World War I: The British Royal Navy makes a raid in an attempt to neutralise the Belgian port of Bruges-Zeebrugge
1920 The Grand National Assembly of Turkey (TBMM) is founded in Ankara, Turkey. It denounces the government of Sultan Mehmed VI and announces the preparation of a temporary constitution
1927 Cardiff City defeat Arsenal in the FA Cup Final, the only time it has been won by a team not based in England
1929 Turkey becomes the first country to celebrate Children's Day as a national holiday
1932 The 153-year-old De Adriaan Windmill in Haarlem, Netherlands burns down. It is rebuilt and reopens exactly 70 years later
1935 The Polish Constitution of 1935 is adopted
1940 The Rhythm Night Club fire at a dance hall in Natchez, Mississippi, kills 198 people
1941 World War II: The Greek government and King George II evacuate Athens before the invading Wehrmacht
1942 World War II: Baedeker Blitz – German bombers hit Exeter, Bath and York in retaliation for the British raid on Lübeck
1945 World War II: Adolf Hitler's designated successor Hermann Göring sends him a telegram asking permission to take leadership of the Third Reich, which causes Hitler to replace him with Joseph Goebbels and Karl Dönitz
1946 Manuel Roxas is elected the last President of the Commonwealth of the Philippines
1949 Chinese Civil War: Establishment of the People's Liberation Army Navy
1951 American journalist William N. Oatis is arrested for espionage by the Communist government of Czechoslovakia
1955 The Canadian Labour Congress is formed by the merger of the Trades and Labour Congress of Canada and the Canadian Congress of Labour
1961 Algiers putsch by French generals
1967 Soviet space program: Soyuz 1 (Russian: Союз 1, Union 1) a manned spaceflight carrying cosmonaut Colonel Vladimir Komarov is launched into orbit
1968 Vietnam War: Student protesters at Columbia University in New York City take over administration buildings and shut down the university
1971 Bangladesh Liberation War: The Pakistan Army and Razakars massacre approximately 3,000 Hindu emigrants in the Jathibhanga area of East Pakistan (now Bangladesh)
1985 Coca-Cola changes its formula and releases New Coke. The response is overwhelmingly negative, and the original formula is back on the market in less than three months
1990 Namibia becomes the 160th member of the United Nations and the 50th member of the Commonwealth of Nations
1993 Eritreans vote overwhelmingly for independence from Ethiopia in a United Nations-monitored referendum
1993 Sri Lankan politician Lalith Athulathmudali is assassinated while addressing a gathering, approximately four weeks ahead of the Provincial Council elections for the Western Province
1997 Omaria massacre in Algeria: Forty-two villagers are killed
2005 First Youtube video uploaded, titled "Me at the zoo"
2013 Violence in Bachu County, Kashgar Prefecture, of China's Xinjiang results in death of 21 people